Merge pull request #23 from hariadi/master

v0.1.6
fixing async issues
0.1.7
adding missing write file statement when converting xml to json
0.1.8
Update deps

xml2js
* fixes parseString callback never callback when XML invalid
update task description
fix json to yml converter.

also fix log output show duplicate file generated
add type option to define content with unknown extension
update docs
update changelog, bump v0.1.9